Question

b) A boy has a mass of 55 kg. He climbs 10 m up a tree. What is his gravitational potential energy? {with numerical}

Answer 1

The formula is:

Change in GPE = mass × gravity × change in height

Entering our numbers:

Change in GPE = 55 × 10 × 10

= 5500J

= 5.5 kJ

Physics Tip

A kJ (kilo-joule) is 1000 J.

It's sensible to round off your answers in this way

pls mark as brainliests answer